10.14489/td.2024.02.pp.056-062

2024, 02 February

DOI: 10.14489/td.2024.02.pp.056-062

Efanov V. N., Ivanova N. S.
DIAGNOSTICS OF THE STATE OF COMPLEX TECHNICAL OBJECTS ON THE BASIS OF DETECTION OF ANOMALIES OF TIME SEQUENCES
(pp. 56-62)

Abstract. The problem of estimating the state of complex technical objects based on the analysis of time sequence anomalies is considered. The purpose of this research is to develop a method of detecting contextual anomalies of time sequences, which allows to determine the degree of development of degradation processes that lead to failures. The study of modern intellectual means of analyzing time sequences of high dimensionality is carried out. It is shown that contextual anomalies are of the greatest interest from the point of view of technical objects state estimation. We propose a spectral method for analyzing context anomalies. In this case, unlike the known spectral methods, a special basis of exponential functions is used. The methodology of calculating spectral coefficients of the investigated time series is described, on the basis of which a generalized attribute is calculated, allowing to attribute the case under study to a normal or anomalous group. An example of gas turbine engine state estimation with a possible defect of turbocharger rotor is given.

Keywords: complex technical objects, state diagnostics, anomalies, spectral method.

+ - About the Authors Click to collapse

V. N. Efanov, N. S. Ivanova (Ufa University of Science and Technology, Ufa, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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